Sliding doors and windows



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Patented Nov. 15, 1960 SLIDING DOORS AND WINDOWS Charles Barahas, 2311Vermont, Duquesne, Pa.

Filed Nov. 7, 1958, Ser. No. 772,597

2 Claims. (Cl. 20-19) common plane when the doors or panels are inpositions that close the doorway.

Another object of my invention is to provide springs so arranged as toexert constant yieldable pressure on the sliding panels either in theiropen or closed positions to thereby avoid looseness and rattling of thedoors in their supports.

As shown in the accompanying drawings:

Figure l is a horizontal sectional view of the door structure, taken onthe line I-I of Fig. 2 but with the doors closed.

Fig. 2 is a vertical sectional view through both panels, when they arein the open position shown in the upper part of Fig. 3.

Fig. 3 is ra schematic view showing various positions occupied by thepanels when one panel has been moved to the right to open position, theigure also showing the manner in which the panels are shiftedperpendicularly to one another through 4sliding movement of one panel.

Fig. 4 is a view showing one of the stop brackets of Fig. 2, at thelower right-hand side of the doorway.

Fig. 5 is a perspective view of one roller upon which the door panelsare supported.

Fig. 6 is an enlarged view of a spring that is mounted on the floor atabout where the inner vertical edges of the panels meet, as indicated inFig. 8.

Fig. 7 is a plan view of the spring of Fig. 2, located y The structurecomprises a pair of short stop angles 10 and 11, at the lower corners ofthe doorway, and a 4long plate 12 that serves as a trackway and issecured to the floor 13 as by screws 14. A channel 15 is secured to aceiling or a doorway lintel 19, the flanges 16 and 17 of the channelsserving las guideways. A relatively short ange 18 is welded or otherwiseconnected to the channel 15, it being of a length somewhat less thanhalf the length of the doorway.

The doors 20 and 21 may be of any suitable form but are here shown as ofpaneled construction, there being framing 22 and 23 to which the panelsare secured, by nails, glue, or the like. Also, when the framing is ofwood, I may suitably use reinforcing angles 24 imbedded therein areinforce against splitting land warping.

Each door is supported upon a pair of rollers 25, the rollers beingpositioned adjacent to each vertical edge of the door and travelingalong the trackway 12 when the doors are being opened and closed. Thedoor 21 adjacent to its upper edge has leaf springs 26 Iand 27 securedthereto as for engagement with springs 28 and 29 respectively, when thedoors are in closed position as shown in Fig. l. Another spring 26a(Fig. 8) is secured to the door 21 adjacent to its bottom and bearsagainst a spring 30 that is fastened to the floor 13 by a bracket 31, atthe middle of the doorway, below the spring 28. Similarly, a springcorresponding to the spring 27 is secured to the door 21 near its loweredge, in position to engage a spring 33 that is below spring 29 that issecured to the angle 11 on the oor 13. The spring 30 serves as ayieldable `guide for the lower edge of the door 21 when this door ispushed completely to the lett, behind the door 29.

A stop block 35 on the door frame alines and holds the lower edge of thedoor 20 against backward swing when the door occupies the position shownin Fig. ll. The doors are provided with handles 36 and 37 respectivelyby means of which they may be rolled along the trackway 12.

As shown in Fig. l, the doors are closed. If now it is desired to openone half of the doorway, either the handle 36 or the handle 37 will bepulled in a direction to slide one of the doors. If `it is desired toopen the right-hand half of the doorway, the handle 37 will be pulled tomove the beveled vertical edge of this door along the Ibeveled edge ofthe door 20, toward and past the position shown in the lower part ofFig. 3. This movement will cause compression of the springs 26 `and 28against the flange 17, and continued movement will place the door 2lcompletely behind the door 20. To open the left hand half of the door tothe position shown in the upper part of Fig. 3, the handle 36 will bepulled, thereby sliding lthe door 20 past the beveled edge vof the door2l and compressing the springs 26 and 28 as well as the -lower spring30. Completion of this opening movement will result in compression alsoof the springs 27 and 29 as well as the spring 33, so that both doorswill be accommodated between the flanges 16 and 17, at their upperedges, their lower edges being held between the stops 10 and 11.

I claim fas my invention:

l. A door structure that comprises an upper Vguideway of a lengthIapproximately equal to the width of an opening through a door frame,front and rear depending Vguide flanges at the longitudinal edges of theguideway, a pair of doors disposed -at their upper edges, be.

tween the flanges, a trackway that supports the doors vertically, anintermediate guide flange engaged by the upper portion of one door andserving to guide the door in `a iixed path `along the front guide angeand of a length approximately one-half the lengths of the front a-ndrear anges, a spring yieldably engaging the lower edge of the other doorand holding the door against the said front flange when the doors are ingenerally edgeto-edge relation and in a common plane, means for guidingthe said other door behind the intermediate llange and the first-nameddoor when the said other door is being moved toward its open positionfrom said edge-toedge relation, a second spring on the said other Idoor,engageable with the rear guide ange when the door is in open position,to hold the door against the intermediate guide ange, and a third springon the rear fiange, in position to be engaged by the second-named springwhen the said second door is closed, in position to cooperate with therear side of the second-named spring to hold the last-named `dooragainst the front guide ange when this door is closed.

2. A `structure as recited in claim l, wherein the second andthird-named springs are normally locatedadjacent to the meeting edges ofthe doors when they are closed, and fourth and fth springs are providedon the upper edge of the said other door and the rear flange: 17respectively, in position to engage one another when the said other dooris fully closed and to hold said door against the front guide ange whenthe said one 5 door is in closed position, and to hold the said otherdoor against the first-named door when the first-named door is in openposition.

References Cited in the le of this patent UNITED STATES PATENTS BeardDec. 4, 1877 Bauch Sept. 5, 1882 Curtis i Jan. 15, 1907 FOREIGN PATENTSGreat Britain Aug. 20, 1937

